School

1. Teachers

1.1. Good Teachers

1.2. Bad Teachers

1.3. Some get along with students.

2. Students

2.1. Students are smart

2.2. Some don't behave well.

3. Subjects

3.1. Hard subjects

3.2. Easy subjects

4. Homework

4.1. Some do it

4.1.1. Some don't do it.